Whoa, slow down. Multiple CPU's, multiple control panels, rotating monitor, modular who knows what. No wonder "it's not coming along like I wanted".
Trying to do it all on your first cab will increase the build time and significantly increases the likelyhood of you giving up all together. I'd recommend keeping it simple for your first one. Get something running, play with it, learn from it, then move on to the next.
Also, get it out of your parents garage and into your living room. A little sawdust never hurt a couch. Looking at the incomplete project everyday should inspire you to finish it.